Proware 3164S1/D1-G1S3, Руководство пользователя

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iSCSI GbE to SAS/SATA II RAID Subsystem
108 User Manual
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Snapshot space:
This setting is the ratio of source VD and snapshot space. The default ratio is 2 to 1.
It means when the clone process is starting, the system will automatically use the
free RG space to create a snapshot space which capacity is double the source VD.
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Threshold: (The setting will be effective after enabling schedule clone)
The threshold setting will monitor the usage amount of snapshot space. When the
used snapshot space achieves its threshold, system will automatically take a clone
snapshot and start VD clone process. The purpose of threshold could prevent the
incremental copy fail immediately when running out of snapshot space.
For example, the default threshold is 50%. The system will check the snapshot
space every hour. When the snapshot space is used over 50%, the system will
synchronize the source VD and target VD automatically. Next time, when the rest
snapshot space has been used 50%, in other words, the total snapshot space has
been used 75%, the system will synchronize the source VD and target VD again.
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Restart the task an hour later if failed: (The setting will be effective after
enabling schedule clone)